e20fbb00d0
Accesses DeviceScaleFactor using the windows API GetScaleFactorForMonitor and adds it to the DesktopFrame. In a follow-up CL, this value is propagated to DesktopCaptureDevice::Core::OnCaptureResult where it is added to the frame metadata. In a follow-up CL, add RegisterScaleChangeEvent to get notified whenever the device scale factor changes. Design doc: go/expose-captured-surface-resolution Bug: chromium:383946052 Change-Id: I363af33c569419d95ddf31a0cc2f9cecf6fb0c7b Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/374344 Reviewed-by: Henrik Andreassson <henrika@webrtc.org> Reviewed-by: Mark Foltz <mfoltz@chromium.org> Commit-Queue: Palak Agarwal <agpalak@google.com> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/main@{#43827}
80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/desktop_capture/win/dxgi_frame.h"
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#include <string.h>
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#include <utility>
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#include "modules/desktop_capture/desktop_frame.h"
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#include "modules/desktop_capture/win/dxgi_duplicator_controller.h"
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#include "rtc_base/checks.h"
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#include "rtc_base/logging.h"
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namespace webrtc {
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DxgiFrame::DxgiFrame(SharedMemoryFactory* factory) : factory_(factory) {}
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DxgiFrame::~DxgiFrame() = default;
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bool DxgiFrame::Prepare(DesktopSize size,
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DesktopCapturer::SourceId source_id,
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std::optional<int32_t> device_scale_factor) {
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if (source_id != source_id_) {
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// Once the source has been changed, the entire source should be copied.
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source_id_ = source_id;
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context_.Reset();
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}
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if (resolution_tracker_.SetResolution(size)) {
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// Once the output size changed, recreate the SharedDesktopFrame.
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frame_.reset();
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}
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if (!frame_) {
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std::unique_ptr<DesktopFrame> frame;
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if (factory_) {
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frame = SharedMemoryDesktopFrame::Create(size, factory_);
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if (!frame) {
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RTC_LOG(LS_WARNING) << "DxgiFrame cannot create a new DesktopFrame.";
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return false;
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}
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// DirectX capturer won't paint each pixel in the frame due to its one
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// capturer per monitor design. So once the new frame is created, we
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// should clear it to avoid the legacy image to be remained on it. See
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// http://crbug.com/708766.
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RTC_DCHECK_EQ(frame->stride(),
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frame->size().width() * DesktopFrame::kBytesPerPixel);
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memset(frame->data(), 0, frame->stride() * frame->size().height());
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} else {
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frame.reset(new BasicDesktopFrame(size));
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}
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frame->set_device_scale_factor(device_scale_factor);
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frame_ = SharedDesktopFrame::Wrap(std::move(frame));
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}
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return !!frame_;
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}
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SharedDesktopFrame* DxgiFrame::frame() const {
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RTC_DCHECK(frame_);
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return frame_.get();
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}
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DxgiFrame::Context* DxgiFrame::context() {
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RTC_DCHECK(frame_);
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return &context_;
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}
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} // namespace webrtc
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